Water-filter



(No Model.) 2 Sheets-Sheet 1.

H. C. STIPEL.

WATER FILTER.

N0. 582,402.- Patented May 11, 1897.

la um '9 i ,ff l 1 i M3 I mmm z 2f I l 'y l h!! K f wh/ 2@ O O 0 gf@ E Lmm.. WASHINGTON D o WATER FILTER.

No. 582,402. Patented May 1l, 1897.

Lzzz.

z d M .r 2 n n d. Mads@ Td 2, 56. H ilu IIIAAAA m, e M

UNITED STATES PATENT `EEioE.

HERMAN O. STIFEL, OF ST. LOUIS, MISSOURI, ASSIGNOR, BY MESNE ASSIGN- MENTS, TO TIIE- AMERICAN TRIPOLI COMPANY, OF OARTHAGE, MISSOURI.

WATER-FILTER.

SPECIFICATION forming part of Letters Patent No. 582,402, dated May 11, 1897'.

Application filed .Tuly 16, 1894.

T a/ZZ whom t may concern:

Be it known that I, HERMAN C. STIFEL, of the city of St. Louis,in the State of Missouri, haveinvented a certain new and useful Improvement in Water-Filters, of which the following'is a full, clear, and eXact description, reference being had to the accompanying drawings, forming part of this specification.

This invention relates to certain improvements in the general class of filters shown and described in my application, Serial No. 502,350, iiled March 5, 1894.

This invention consists in features of novelty hereinafter fully described, and pointed out in the claims.

Figure I is a side elevation of my improved filter. Fig. II is an elevation of the valve device with waste-pipe and supportin g-brackets. Fig. III is a vertical longitudinal section of the device. Fig. IV is a detail vertical section of the check-valve with the clear-water cylinder. Fig. V is a top View of the checkvalve and its supporting-ring; and Fig. VI, a bottom view of same, showing a modification of the ring.

Referring to the drawings, 1 represents the filtering-tank, and 2 the filtering-stone. The stone is held in place within vthe tank by means of a rod 3, tapped into a disk 4 at the bottom of the stone and having a nut 5 at its upper end above a pipe or casting 6, located over a cap or disk 7 on the upper end of the stone. The cap or disk 7 is provided with an opening 8, through which water passes from the stone into the pipe or hollow casting 6, from where the water passes on t0 a pipe 9 (which may be in the form of a glass tube) and througha pipe 10 to a storage-tank or place of use.

11 represents a cylinder preferably, though not necessarily, located over the filteringtank. This cylinder is provided with a loose piston 12, and on its upper end is a casting 13, through which water passes from the pipe 9 to the pipe 10 around a cup-shaped Valve 14, having a ring or lange 15 seated over an opening 16 in the casting 13 above the cylinder 11. The valve 14 does not entirely fill the space 17within the casting 13, so that the water can pass around'it from pipe 9 to pipe 10. The valve 14 is hollow, as shown in Fig.

Serial No. 517,639. (No model.)

passes from the filter through the pipe 9 into 6o the pipe 10 a portion of it passes through the ring into the cylinder 11 above the piston 12, lling the cylinder and forcing the piston (if it has not fallen by gravity) to the lower end of the cylinder.

23 represents a valve device communicating with the tank 1 or with the casting 6 on top of the tank 1 through means of a pipe 24 and communicating with the cylinder 11 through means of a pipe 25, and also commu- 7o nicating with the lower end of the tank 1 by means of a pipe 2G.

The valve device consists of the tube 27, within which is a rod 28, carrying valves or pistons 29, 30, 31, 32, 33, 34, and 35. The rod 75 is operated by a lever 38. The supply-pipe communicates with an opening 39 in a casting or pipe 40. From the opening 39 the pipe 40 has an upwardly-extendin g branch 41, that leads to the space between the valves and 8o when the parts are in normal position, and a lower branch 42, that leads to the space between the valves 32 and 31 when the parts are in normal position. Vater entering through the branch 42 passes through the pipe 24 into 8 5 the iiltering-tank, and passing through the stone goes out through the pipes 9 and 10. This operation continues until it is desired to clean the filter, when the lever 38 is operated, pulling the rod 28 and its valves into 9o the position shown by dotted lines, Fig. III. This opens the pipe 26 to the waste-pipe 44 and also opens the branch 41 to the pipe 25, when a portion of the water from the supplypipe will pass through pipe 25 and into the 95 cylinder 11, beneath the piston 12, and will force the piston to the upper end of the cylinder, causing the clear Water in the cylinder to pass out through the pipe 9, back through the stone 2, and out through the pipe 26. As ioo the piston 12 rises the check-valve 14 is forced to its seat 19, thus shutting off the backflow of water through the pipe lO. During this cleansing operation water continues to pass through the branch 42 and through the pipe 24, washing the sediment from the outside of` the stone 2. Vhen the lever 38 is released or forced back to its normal position, carrying the stem 28, with its valves, to their normal 50 represents a storage or clear-Water tank y with which the pipe l0 may be connected,

and I have shown the pipe l0 extending to.

near the bottom of the tank 50.

By this simple device an eective cleaning of the stone by clear water is obtained, the

water being forced back through the stone` pipes forming a communication between the under the city or supplypressure.

I claim as my invention- 1. In a water-filter, the combination of afiltering-tank, discharge-pipes leading from the ltering-tank, a cylinder communicating with the discharge-pipes, a check-valve located between the discharge-pipes and said cylinder, a piston in the cylinder, a valve device, a pipe forming a communication between the cylinder and the valve device, a supply pipe, a

pipe forming a communication between the valve device and the iilter, through which the supply of water passes, and a pipe forming a communication between the filter and the cutoff, through which the waste water passes; substantially asset forth.

2. lIn a iilter, the combination of a filteringtank, a discharge-pipe leading from the filterin g-tank, a cylinder with which the dischargepipe communicates, a check-valve between the discharge-pipe, and said cylinder, a piston in said cylinder, a supply-pipe, a Valve device, and communications between said valve device and said cylinder and tank, whereby when the valve device is operated filtered water willbe forced back through the ltering-tank, under `the supply-pipe pressure, by water from the supply-pipe; substantially asset forth.

3. In a water-filter, the combination of a filtering-tank, a discharge-pipe, a cylinder communicating with the discharge-pipe, a checkvalve in said communication, a piston in the cylinder, a supply-pipe, a valve device, and

valve device, and said cylinder andtank said check-valve being formed with an open ring l5, and being adapted to closethe dischargepipe, when the filter is being cleaned; substantially as set forth.

HERMAN C. STIFEL. In presence of- E. S. KNIGHT, C. G. EDWARDS. 

